Alarm attachment for printing presses



Dec. 25, 1923.-

w. c. STROLE LARM ATTACHMENT FOR PRINTING PRESSES 2 sheets-sheet 1 FiledOC'Q. 8. 1919 W//zfyaQS/m/ l. z W

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Dec. 25, 1923.

W. C. STROLE ALARM ATTACHMENT FOR PRINTING PRESSES Filed Oct. 8, 1919 2Sheets-Sheet 2 Patented Dec. 25, 1923.

UNITED STATES WILLIAM C. STROLE, F DETROIT, MICHIGAN.

ALARM ATTACHMENT FOR PRINTING PRESSES.

Application filed October 8, 1919.

To all whom t may concern.'

Be it known that I, IVILLIAM C, S'rnoLn, a citizen of the United Statesof America, residingat Detroit, in the county of Vayne and State ofMichigan, have invented certain new and useful Improvements in AlarmAttachments for Printing Presses, of which the following is aspecification, reference being had therein to the accompanying draw-11.) lugs,

In the operation of printing presses of that type having a reciprocabletype bed, an automatic feed mechanism, and a magazine for holding paperfor the feed mechanism,

provision is made so that the type bed is not inked when paper is not inposition to properly pass on to the type bed. The paper may not be inposition due to a number of causes, mainly, that of the magazine beingexhausted or the magazine and the feeding mochanism clogged with paperso that it cannot properly feed onto the type bed. IVith these magazineprinting presses it is customary for an operator to place the same inopera- .-5 tion and then attend to other duties, but

When the magazine or the feeding mechanism becomes clogged or otherwiserendered inoperative for the purposes for which they are intended, theoperator or attendant of the machine does not always immediatelydiscover that the machine is not printing.

The object of my invention is to provide a novel electrical, audible orvisible signal which will indicate to the operator or attendant of theprinting press that the same requires his attention. The signal is madepart of the printing press or machine and is automatically actuated by acontrolling member of the printing press. The con- -10 trolling memberis under the influence of the feeding mechanism and when the paper isnot in position to be placed on the type bedthe signal is operated sothat the attendant of the machine may immediately discover Why themachine is not properly Working and make such adjustments or paperre-arrangements so that the press will print in the usual manner.

The mechanical construction entering into this invention will behereinafter considered and then claimed, and reference will now be hadto the drawing, wherein- Figure 1 is a side elevation of a portion of aprinting press provided with a signal in accordance with my invention,and

Serial No. 329,229.

Fig. 2 is a plan of the same partly broken away.

In order that the operation of the signal may be understood inconnection with a conventional form of automatic magazine printing pressor machine, I have illustrated a portion of that type of machine whichis commonly used in banks or small institutions for printing on smallsheets of paper which are automatically fed into position from amagazine in which the paper may be stacked. Such a` machine may includea frame Work 1 having a reciprocable type bed 2 on which the type orforni is placed and this type bed supports a platen or ink Worling-outplate 3 beneath inking rolls 4 carried by the frame Work 1. On the frameWork are bearings 5 for an intermittently operated revoluble roller 6beneath which passes the sheets of paper that are to be printed bycontacting with the type bed or form. The roller 6 is supported looselyon an eccentric 7 and at one end of said roller is a pinion 8 meshingwith a rack 9 of the type bed 2, so that when the type bed isreciprocated the roller will be revolved, One end of the eccentric 7 hasa pinion 10 meshing with a rack 11 adjustable on a slide member 12 andWhen the slide member is actuated the roller 6 may be raised and loweredrelative to the type bed or frame Work. For instance, the roller 6 is ina lowered position When holding a piece of paper on the type bed duringthe forward movement of said type bed, but on the return movement ofsaid type bed the roller is elevated, thus preventing the inked typefrom contacting With the roller.

The machine also includes a perforated platform 13 in advance of theroller 6 and this platform is adapted to receive sheets of paper from aguide or. conveyor 14 in alignment with said platform. Below theplatform is a feed roller 15 and above the platform is an adjustabledriven feed roller 16 journaled in a tiltable frame 17 which is tiltedthrough the medium of the reciprocable type bed to move the feed roller16 relative to the platform 13, so that a sheet of paper will be fedinto position when the type bed is properly located to receive the same.The movable feed roller 16 may be in the form of a. plurality of smallrollers, as shown in Fig. 2, so as to provide clearance for stop members18 controlled by the tiltali able frame 17, said stop members enteringthe perforated platform 13 to hold a sheet of paper in position betweenthe rollers 15 and 16 so that it may be engaged by said rollers and fedbetween the type bed and the roller 6.

Associated With the stop members 18 is a nger 19 which normally engagesa sheet of paper when there is a sheet in position on the platform 13and the machine is in operative condition, but when a sheet fails toreach the platform 13 then the finger 19 enters the platform and in sodoing operates a crank 2G connected to a controllingmember 21 extendingforward to a cam member' 22 slidable at the side of the frame work 1.Associated with the cam member 22 is a trip member 23 adapted to lockthe slide member 12, said trip member being in the path of a cam 2&1carried by the type bed 2. Besides the slide member 12 abuttingthe tripmember 23 said slide member' is adapted to have its opposite end 25engaged by the rear end of the type bed and said type bed, through themedium of the slide member 12 controls the raising and lowering` of theroller 6.

All of the above mechanism is of a conventional form and it is thoughtunnecessary to enter into a detailed description of the exact operationof the mechanism, other than to state that the controlling, member 21will be operated when sheets of paper are not in position to passthrough the printing press. Qperation of the controlling member 2l meansa reciprocable movement thereof, so l provide said member with a contactmember 26 adapted to engage a stationary or yieldable contact member 2'?supported from a block of insulation 28 on the frame work 1. Theyieldable contact member 2T is connected by a Wire 29 to an ordinaryswitch 30 and said switch is in circuit with the battery or cells 31constituting a suitable source of electrical energy. The battery 31 isconnected by a Wire 32 to an audible signal 33, as an electric bell, andsaid signal is connected by awire Beto the Contact member 26, so thatwhen the switch 30 is closed and the members 26 and 27 contact there isa closed circuit which causes the signal to be operated and thusindicate to the attendant of the machine that paper is not properlyfeeding` or the magazine has become clogged.

VV hat l claim is ln a printing press having a paper feeding device witha feeler linger normally resting on the paper and adapted to be released by the absence of paper r-means adapted to provide a signal whenthe fcele finger is released, said means comprisinga normally openContact device in an electric signal circuit, said contact device havingits circuit maintained open by the feeler inger resting on the paperandL which circuit is closed by the feeler finger being released by theabsence of the paper, a controllingmember connected to and reciprocatedby the feeler nger, a trip member actuated by said controlling member, aContact member adapted t0 be engaged by the contact member of saidcontrolling` member to complete the electric signal circuit, said tripmember holding the contact member of said controllingmember inengagement with said resilient contact member.

In testimony whereof laffix my signature in the presence of tivoWitnesses. Y

VVILLAM C. STROLE. Witnesses ANNA M. Donn, KARL H. BUTLER.

